.app_title{
    z-index: 100;
    position: fixed;
    top: 0;
    height: 1rem; 
    width: 100%;
    color: #474747;
    border-bottom: 1px solid #ccc;
    background-color: #fff;
    .app_title_left,.app_title_right{ 
        width: 0.7rem;
        height: 1rem; 
        line-height: 1rem;
        text-align: center;
        img{
            display: block;
            width: 0.4rem;
            height: 0.4rem;
            margin: 0.35rem 0 0 0.2rem;
        }
    }
    .app_title_content{
        font-size: 0.28rem;
        margin: 0 0.8rem;
        height: 1rem; 
        line-height: 1.1rem;
        text-align: left;
    }  
}
